[tor-bugs] #20909 [Core Tor/Tor]: Tor 0.2.9.5-alpha still delivers outdated consensuses

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#20909: Tor 0.2.9.5-alpha still delivers outdated consensuses
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 Reporter:  teor                                 |          Owner:
     Type:  defect                               |         Status:  new
 Priority:  High                                 |      Milestone:  Tor:
                                                 |  0.2.9.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.2.9.5-alpha
 Severity:  Normal                               |     Resolution:
 Keywords:  regression, must-fix-                |  Actual Points:
  before-029-stable                              |
Parent ID:                                       |         Points:  1
 Reviewer:                                       |        Sponsor:
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Comment (by teor):

 Those relays have recovered since yesterday.
 That's good, but serving a stale consensus for ~12-24 hours is still a bad
 thing.

 Running a full check in #20501 will tell us the prevalence of this issue.

 Some of our 0.3.0 changes might fix this:
 * using microdesc consensuses by default (#6769).

 I suggest we bring this change forward to 029 as an extra precaution:
 * 404 when consensus is out of date (#20511)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20909#comment:7>
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